| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 13 Aug 2021 | 13 Aug 2021 | 001-11981 | |
| 4 | Open Document | Open Filing | 19 Oct 2018 | 16 Oct 2018 | 001-11981 | |
| 4 | Open Document | Open Filing | 12 Oct 2018 | 09 Oct 2018 | 001-11981 | |
| 4 | Open Document | Open Filing | 05 Oct 2018 | 02 Oct 2018 | 001-11981 | |
| 4 | Open Document | Open Filing | 28 Sep 2018 | 25 Sep 2018 | 001-11981 | |
| 4 | Open Document | Open Filing | 20 Sep 2018 | 18 Sep 2018 | 001-11981 | |
| 4 | Open Document | Open Filing | 13 Sep 2018 | 11 Sep 2018 | 001-11981 | |
| 4 | Open Document | Open Filing | 25 May 2017 | 23 May 2017 | 001-11981 | |
| 4 | Open Document | Open Filing | 22 May 2017 | 16 May 2017 | 001-11981 | |
| 4 | Open Document | Open Filing | 15 May 2017 | 09 May 2017 | 001-11981 | |
| 4 | Open Document | Open Filing | 04 May 2017 | 02 May 2017 | 001-11981 | |
| 4 | Open Document | Open Filing | 28 Apr 2017 | 25 Apr 2017 | 001-11981 | |
| 4 | Open Document | Open Filing | 19 Apr 2017 | 18 Apr 2017 | 001-11981 | |
| 4 | Open Document | Open Filing | 11 Apr 2017 | 11 Apr 2017 | 001-11981 | |
| 4 | Open Document | Open Filing | 05 Apr 2017 | 04 Apr 2017 | 001-11981 | |
| 4 | Open Document | Open Filing | 29 Mar 2017 | 28 Mar 2017 | 001-11981 | |
| 4 | Open Document | Open Filing | 27 Mar 2017 | 23 Mar 2017 | 001-11981 | |
| 4 | Open Document | Open Filing | 20 Mar 2017 | 16 Mar 2017 | 001-11981 | |
| 4 | Open Document | Open Filing | 13 Mar 2017 | 09 Mar 2017 | 001-11981 | |
| 4 | Open Document | Open Filing | 03 Mar 2017 | 02 Mar 2017 | 001-11981 | |
| 4 | Open Document | Open Filing | 27 Feb 2017 | 23 Feb 2017 | 001-11981 | |
| 4 | Open Document | Open Filing | 21 Feb 2017 | 16 Feb 2017 | 001-11981 | |
| 4 | Open Document | Open Filing | 15 Feb 2017 | 09 Feb 2017 | 001-11981 | |
| 4/A | Open Document | Open Filing | 06 Feb 2017 | 02 Feb 2017 | 001-11981 | |
| 4 | Open Document | Open Filing | 06 Feb 2017 | 02 Feb 2017 | 001-11981 | |
| 4 | Open Document | Open Filing | 30 Jan 2017 | 27 Jan 2017 | 001-11981 | |
| 4 | Open Document | Open Filing | 27 Jan 2017 | 26 Jan 2017 | 001-11981 | |
| 4 | Open Document | Open Filing | 20 Jan 2017 | 19 Jan 2017 | 001-11981 | |
| 4 | Open Document | Open Filing | 17 Jan 2017 | 12 Jan 2017 | 001-11981 | |
| 4 | Open Document | Open Filing | 05 Jan 2017 | 05 Jan 2017 | 001-11981 | |
| 4 | Open Document | Open Filing | 03 Jan 2017 | 15 Dec 2016 | 001-11981 | |
| 3 | Open Document | Open Filing | 03 Jan 2017 | 17 Aug 2015 | 001-11981 |